After the required changes of OS of the batch access in view of fransferring
the computing machines (Worker Nide - WN) to OS Scientific Linux SL release
5.3 and MIT Kerberos 5, it is necessary to correct the task start scripts of
users. This should be done only in case when the file remote copying
instruction - "scp" - is used. One should correct this instruction so that
it uses a protocol SSH version 2, not version 1, how it was earlier.
Thus, if the script contains call "scp", scp -p1 ... , you should change it
for scp-p2 ...

In order to speed-up the changeover to OS SL53, a new interactive machine
lxpub05.jinr.ru will be installed which works under OS SL53 with 64-bit
architecture.
The interactive machines lxpub01 -:- lxpub03 will operate under OS SL48
during
1-2 months approximately.

18 September 2009

Dear Users of CICC!

We are going to upgrade CCIC' batch farm and
interactive machine lxpub02.jinr.ru to the OS
Scientific Linux SL release 5.3 (SL53).
Due to this upgrade, all batch resources will be
unavailable from 25 September till 1 October.
Our apologies for the late announcement of this urgent action.

There is a problem in one of AFS servers ownered by Laboratory
of High Energies (not in LIT). Due to this problem some users
lost HOME directories. We are going to create temporary and
empty HOMEs for such users on LIT' own AFS servers at 31.08.09
and done that for the users registered at LIT farm.

In view of the reorganization of the power supply system in the CICC hall,
sometimes there are power supply failures and part of the computing resources is turned off.

Due to changing the scheme of the network connections in CICC and replacements of the network equipment and the cable system, the network sometimes works unstably.

Adjustments of the system of batch operation have been changed at the
CICC computing farm:

- Maximal astronomical time of computation is limited by101 hours;

- Maximal CPU time for a single-processor problem is limited by 100 hours;

- Maximal CPU time for a multiprocessing problem (MPI) are limited by 8x100= 800 hrs.

Adjustment of the system of batch operation is not complete yet and will vary during the nearest weeks.

The completion of all the work on putting new technical equipment at the JINR CICC and the termination of adjustments of all hard- software complex is planned by the end of May.

11 March 2009

Dear Users of CICC!

Due to upgrade of JINR border gateway (cisco router) and LIT
LAN maintenance we expect a few network interrupts for about
30-40 minutes each at 2009-03-12 from 14:00 till 18:00.
Sorry for any inconveniences.

18 February 2009

Dear Users of CICC!

A Web-monitor has been started-up at the JINR computing farm where one will be able to get acquainted with operation of the computing cluster as well as with information on user's tasks.

9 February 2009

Dear Users of CICC!

12 February from 15:00 up to 23:00 some instability
of the cluster expected due to replacing of main router.
We ask you do not submit long jobs to the cluster at this
time. Sorry for any inconveniences.

22 January 2009

Dear Users!

Our WN resources on the farm will be lowered from 560 to
240 CPUs till the next monday - 26.01.2009 due to moving
shelfs in the computing hall.